Why Does My Basement Smell Bad?

The most common causes of a musty basement smell are mold and dampness. The root cause of these issues, however, can vary. 

• Dampness 

Dampness may be caused by leaks in your home’s plumbing system or appliances or cracks in your foundation. It can be hard to know just what the causes of dampness are until a full inspection has been completed. With that said, some causes are far more likely to be the root cause of dampness in a home. 

First and foremost, foundation and structural damage commonly contribute to persistent problems with dampness. This is because of how cracks in a wall or floor act as direct channels for water in the soil around your basement. However water gets into your property, it will begin to stagnate and cause a musty smell. 

• Pests and Mold 

Once dampness makes its way into your basement, it will raise the humidity levels in your home and lead to mold and mildew formation in many cases. This can have a huge effect on the smell in your basement as the water stagnates, but mold formation is a far more pressing concern when it comes to bad odors in a home. Mold loves dark, humid environments and creates a sweet, musty smell. 

Depending on the species of mold that forms in your home you may also experience skin irritation and respiratory problems, or even see an increase in the number of pests on your property. This, in turn, will add to the bad smells in your property, as well as a general decrease in overall hygiene levels. Furthermore, there is a high chance that the mold, and the musty smell, will spread over time.